Baseline Widely available
setUTCMonth()
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const event = new Date("December 31, 1975 23:15:30 GMT-3:00");
console.log(event.toUTCString());
// Expected output: "Thu, 01 Jan 1976 02:15:30 GMT"
console.log(event.getUTCMonth());
// Expected output: 0
event.setUTCMonth(11);
console.log(event.toUTCString());
// Expected output: "Wed, 01 Dec 1976 02:15:30 GMT"
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dateObj.setUTCMonth(monthValue[, dayValue])åæ°
monthValue
ä¸ä¸ª 0-11 çæ´æ°ï¼ä»£è¡¨ 1 æå° 12 æã
dayValue
å¯éåæ°ï¼ä¸ä¸ª 1-31 çæ´æ°ï¼ä»£è¡¨ä¸ä¸ªæç天æ°ã
è¿ä¸ªæ°å¼æ¯ä» 1970 å¹´ 1 æ 1 å· 00:00:00 å°å½åæ¶é´çæ¯«ç§æ°ï¼å½é éç¨æ¶é´ï¼
æè¿°å¦æä½ 没ææç¡®ä¹¦ådayValue
è¿ä¸ªåæ°ï¼é£ä¹å°±ä¼ä»getUTCDate()
æ¹æ³è¿å对åºçæ°å¼ã
å¦æä½ åäºä¸ä¸ªè¶
è¿å¨è§å®çèå´å
çåæ°ãsetUTCMonth()
å°±ä¼è¯å¾ç¸åºçæ´æ°æ¶é´ä¿¡æ¯å¨ Data 对象ä¸ãä¾å¦ï¼å¦æä½ ç¨ 15 ä½ä¸º monthValue
çå¼ï¼é£ä¹å¹´ä»½å°±ä¼å 1ï¼å¹¶ä¸æä»½ä¼åæ 3ãï¼15=12+3ï¼
setUTCMonth()
var theBigDay = new Date();
theBigDay.setUTCMonth(11);
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